635
CDUS41 KPHI 160552
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
152 AM EDT TUE SEP 16 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR SEPTEMBER 15 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 81 3:00 PM 95 1927 78 3 82
MINIMUM 56 6:14 AM 38 1975 56 0 55
AVERAGE 69 67 2 69
PRECIPITATION (IN)
YESTERDAY 0.00 3.23 2003 0.17 -0.17 0.00
MONTH TO DATE 2.07 2.23 -0.16 0.44
SINCE SEP 1 2.07 2.23 -0.16 0.44
SINCE JAN 1 30.37 33.51 -3.14 35.06
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2001 0.0 0.0 0.0
2002
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 9 15 -6 25
SINCE SEP 1 9 15 -6 25
SINCE JUL 1 21 19 2 34
COOLING
YESTERDAY 4 4 0 4
MONTH TO DATE 42 75 -33 23
SINCE SEP 1 42 75 -33 23
SINCE JAN 1 861 935 -74 959
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 39 3:00 PM
AVERAGE 66
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THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 95 1991
MINIMUM TEMPERATURE (F) 55 38 1923
SUNRISE AND SUNSET
SEPTEMBER 16 2025.....SUNRISE 6:44 AM EDT SUNSET 7:08 PM EDT
SEPTEMBER 17 2025.....SUNRISE 6:45 AM EDT SUNSET 7:07 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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